Q2.You have 20 red balls, 14 blue balls. You draw out balls, 2 at a time. If they are of same color, add a blue ball the pile. If the are of di... read more
Q3.You have 3 slices of bread, and a toaster. You can put in 2 slices of bread at a time. Each time, only one side of the bread gets cooked. Ho... read more